install

Additional install commands

macOS

Homebrewverified · 100%

brew install cpuid

local Homebrew formula metadata

MacPortsverified · 94%

sudo port install cpuid

MacPorts ports tree · sysutils/cpuid/Portfile · source: api.github.com

Linux

Debian aptverified · 92%

sudo apt install cpuid

Debian stable package indexes · cpuid · source: deb.debian.org

Fedora dnfverified · 92%

sudo dnf install cpuid

Fedora Rawhide package metadata · cpuid · source: dl.fedoraproject.org

Nixverified · 92%

nix profile install nixpkgs#cpuid

nixpkgs package indexes · pkgs/by-name/cp/cpuid/package.nix · source: api.github.com

openSUSE zypperverified · 92%

sudo zypper install cpuid

openSUSE Tumbleweed package metadata · cpuid · source: download.opensuse.org

overview

Package summary

CPU feature identification for Go

Project links

Commands and aliases

cpuid

history

Project history and usage

cpuid is a Go package and command-line tool for detecting CPU information and CPU feature flags at runtime without cgo.

Project history

The official GitHub repository was created in 2015. The README describes startup CPU detection cached for fast access during a Go program's lifetime, with support for x86/x64, ARM/ARM64, and RISC-V.

Adoption history

cpuid fits Go module distribution as a library imported with github.com/klauspost/cpuid/v2, while also offering an installable cpuid binary via go install, GitHub release binaries, and Homebrew for macOS/Linux users.

How it is used

Go programs use the shared cpuid.CPU value to inspect brand, cores, cache, frequency, and feature sets, then call Supports, Has, or HasAll to gate optimized code paths. The command-line binary prints CPU details and supports JSON output.

Why package nerds care

For packagers and Go maintainers, cpuid is notable because it combines a Go module API with a packaged diagnostic binary, avoids external C code, and exposes runtime feature detection useful to compression, crypto, and other optimized Go libraries.

Timeline

2015: The klauspost/cpuid repository was created.
2024: v2.2.8 and v2.2.9 releases were published.
2025: v2.2.10, v2.2.11, and v2.3.0 releases were published.

Related projects

pkg.go.dev provides generated API documentation for the github.com/klauspost/cpuid/v2 Go module.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`cpuid`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version2.4.0

manager updated2026-06-30

local dataok

upstreamcurrent

latest detectedv2.4.0

https://github.com/klauspost/cpuid

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:cpuid
Version	2.4.0
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/cpuid
Homepage	https://github.com/klauspost/cpuid
Repository	https://github.com/klauspost/cpuid
Upstream docs	https://github.com/klauspost/cpuid#readme
License	MIT
Source archive	https://github.com/klauspost/cpuid/archive/refs/tags/v2.4.0.tar.gz
Last updated	2026-06-30T15:04:20Z
Pulse	updated
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	cpuid
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

cpuid 20250316-1

tool to dump x86 CPUID information about the CPU(s)

https://www.etallen.com/cpuid.html

sudo apt install cpuid

Section: admin
Architecture: amd64
2 dependencies
normalized package name match
Matched by: Cpuid

Debian stable package indexes · deb.debian.org · Debian stable package indexes: cpuid from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Nix95%

cpuid

nix profile install nixpkgs#cpuid

normalized package name match
Matched by: Cpuid

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/cp/cpuid/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

Ubuntu apt95%

cpuid 20240330-1ubuntu2

tool to dump x86 CPUID information about the CPU(s)

https://www.etallen.com/cpuid.html

sudo apt install cpuid

Section: universe/admin
Architecture: amd64
normalized package name match
Matched by: Cpuid

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: cpuid from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

dnf95%

cpuid 20250419-4.fc44

Dumps information about the CPU(s)

http://www.etallen.com/cpuid.html

sudo dnf install cpuid

License: GPL-2.0-or-later
Category: Unspecified
Architecture: x86_64
Source Package: cpuid
4 dependencies
1 provides
normalized package name match
Matched by: Cpuid

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: cpuid from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

zypper95%

cpuid 20260220-1.2

x86 CPU identification tool

http://etallen.com/cpuid.html

sudo zypper install cpuid

License: GPL-2.0-or-later
Category: System/Management
Architecture: x86_64
Source Package: cpuid
2 dependencies
1 provides
normalized package name match
Matched by: Cpuid

openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: cpuid from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

MacPorts95%

cpuid

sudo port install cpuid

normalized package name match
Matched by: Cpuid

MacPorts ports tree · api.github.com · MacPorts ports tree: sysutils/cpuid/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/cpuid.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install cpuid with Homebrew, apt, dnf, MacPorts, Nix, zypper